Step 1.The polynomial function that we have is:

The leading term is

which means the leading coefficient is 7, and the degree of the polynomial is 6.
Step 2. When the degree of a polynomial is an even number, as in this case 6 is even, there are two options for the end behavior:

In this case, the leading coefficient is:

which is a positive number. Therefore, the end behavior of the polynomial is:
Up and Up.
Step 3. A graph of the function confirms the end behavior:
To the left, it goes up, and to the right, it also goes up.
Answer: Up and Up